LUMBER USED IN MANUFACTURE OF WOODEN PRODUCTS. 6 



The kinds of wood are classified according to rather broad com- 

 mercial practice. The classification is practically the same as that 

 used in the lumber census bulletins ; figures on the several species of 

 each family or group are combined under the common name. 



Oak, maple, spruce, hemlock, birch, hickory, basswood, ash, elm, 

 cedar, 1 willow, locust, and eucalyptus each covers its different species. 



Yellow pine includes the southern yellow pines, North Carolina 

 pines, and minor eastern yellow pines. Western yellow pine is listed 

 separately; trade names for it are western pine, western soft pine, 

 and California white pine. 



White pine covers both northern and western (Idaho) white pine 

 as well as Norway pine and jack pine. 



Cottonwood takes in the cottonwoods, aspen (or popple), and balm 

 of Gilead. 



Tupelo includes cotton gum (called tupelo commercially), black 

 gum, and water gum. 



Larch includes western larch and eastern tamarack. 



Mahogany covers all woods sold in this country as such. 



White fir includes the botanical white fir as well as grand and 

 silver (amabilis) fir; the other minor firs, noble, red, and alpine fir, 

 usually sold as white fir, are listed separately. 



All other kinds of wood listed are single species except that cypress, 

 sycamore, cherry, dogwood, magnolia (cucumber, of the magnolia 

 family, is shown separately), and buckeye are family names, but only 

 one species of each is used commercially. Redwood sometimes 

 includes lumber from the bigtree. The red-gum tree yields both 

 commercial red and sap gum and both are covered herein by red gum. 



i Spanish cedar is listed separately. 



